Firn depth correction along the Antarctic grounding line
Abstract To reduce the uncertainty in the calculation of Antarctic solid ice fluxes, the firn depth correction (Δh) in Antarctica is inferred from a steady-state firn densification model forced by a regional atmospheric climate model. The modelled density agrees well with observations from firn core...
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Cambridge University Press (CUP)
2008
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Online Access: | http://dx.doi.org/10.1017/s095410200800148x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410200800148X |
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crcambridgeupr:10.1017/s095410200800148x 2024-06-23T07:46:45+00:00 Firn depth correction along the Antarctic grounding line van den Broeke, Michiel van de Berg, Willem Jan van Meijgaard, Erik 2008 http://dx.doi.org/10.1017/s095410200800148x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410200800148X en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 20, issue 5, page 513-517 ISSN 0954-1020 1365-2079 journal-article 2008 crcambridgeupr https://doi.org/10.1017/s095410200800148x 2024-06-05T04:04:05Z Abstract To reduce the uncertainty in the calculation of Antarctic solid ice fluxes, the firn depth correction (Δh) in Antarctica is inferred from a steady-state firn densification model forced by a regional atmospheric climate model. The modelled density agrees well with observations from firn cores, apart from a site at the origin of fast flowing West Antarctic ice stream (Upstream B), where densification is anomalously rapid. The spatial distribution of Δh over Antarctica shows large variations, especially in the grounding line zone where large climate gradients exist. In places where the grounding line crosses ablation areas, Δh is zero. Along the remainder of the grounding line, Δh values range from typically 13 m in dry coastal areas (e.g. Dronning Maud Land) to 19 m in wet coastal areas (e.g. West Antarctica). Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica Dronning Maud Land West Antarctica Cambridge University Press Antarctic Dronning Maud Land The Antarctic West Antarctica Antarctic Science 20 5 513 517 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract To reduce the uncertainty in the calculation of Antarctic solid ice fluxes, the firn depth correction (Δh) in Antarctica is inferred from a steady-state firn densification model forced by a regional atmospheric climate model. The modelled density agrees well with observations from firn cores, apart from a site at the origin of fast flowing West Antarctic ice stream (Upstream B), where densification is anomalously rapid. The spatial distribution of Δh over Antarctica shows large variations, especially in the grounding line zone where large climate gradients exist. In places where the grounding line crosses ablation areas, Δh is zero. Along the remainder of the grounding line, Δh values range from typically 13 m in dry coastal areas (e.g. Dronning Maud Land) to 19 m in wet coastal areas (e.g. West Antarctica). |
format |
Article in Journal/Newspaper |
author |
van den Broeke, Michiel van de Berg, Willem Jan van Meijgaard, Erik |
spellingShingle |
van den Broeke, Michiel van de Berg, Willem Jan van Meijgaard, Erik Firn depth correction along the Antarctic grounding line |
author_facet |
van den Broeke, Michiel van de Berg, Willem Jan van Meijgaard, Erik |
author_sort |
van den Broeke, Michiel |
title |
Firn depth correction along the Antarctic grounding line |
title_short |
Firn depth correction along the Antarctic grounding line |
title_full |
Firn depth correction along the Antarctic grounding line |
title_fullStr |
Firn depth correction along the Antarctic grounding line |
title_full_unstemmed |
Firn depth correction along the Antarctic grounding line |
title_sort |
firn depth correction along the antarctic grounding line |
publisher |
Cambridge University Press (CUP) |
publishDate |
2008 |
url |
http://dx.doi.org/10.1017/s095410200800148x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410200800148X |
geographic |
Antarctic Dronning Maud Land The Antarctic West Antarctica |
geographic_facet |
Antarctic Dronning Maud Land The Antarctic West Antarctica |
genre |
Antarc* Antarctic Antarctic Science Antarctica Dronning Maud Land West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica Dronning Maud Land West Antarctica |
op_source |
Antarctic Science volume 20, issue 5, page 513-517 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s095410200800148x |
container_title |
Antarctic Science |
container_volume |
20 |
container_issue |
5 |
container_start_page |
513 |
op_container_end_page |
517 |
_version_ |
1802647969353170944 |